Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:43 2012

Optimize a model with 258 rows, 70 columns and 516 nonzeros
Presolve removed 74 rows and 0 columns
Presolve time: 0.00s
Presolved: 184 rows, 70 columns, 432 nonzeros
Variable types: 0 continuous, 70 integer (70 binary)
Found heuristic solution: objective 21.0000000

Root relaxation: objective 2.710000e+01, 124 iterations, 0.00 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   27.10000    0   68   21.00000   27.10000  29.0%     -    0s
H    0     0                      23.0000000   27.10000  17.8%     -    0s
     0     0   26.50000    0   47   23.00000   26.50000  15.2%     -    0s
     0     0   26.38776    0   68   23.00000   26.38776  14.7%     -    0s
     0     0   26.36000    0   69   23.00000   26.36000  14.6%     -    0s
H    0     0                      24.0000000   26.36000  9.83%     -    0s
     0     0   26.33333    0   66   24.00000   26.33333  9.72%     -    0s
     0     0   26.25000    0   67   24.00000   26.25000  9.38%     -    0s
H    0     0                      25.0000000   26.25000  5.00%     -    0s
     0     0   26.21429    0   66   25.00000   26.21429  4.86%     -    0s
     0     0   26.16667    0   65   25.00000   26.16667  4.67%     -    0s
     0     0   26.05172    0   69   25.00000   26.05172  4.21%     -    0s
     0     0     cutoff    0        25.00000   25.99997  4.00%     -    0s

Cutting planes:
  Clique: 1
  Zero half: 51

Explored 0 nodes (317 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.500000000000e+01, best bound 2.500000000000e+01, gap 0.0%